Tablet computer enclosure



FIG. 1 is an upper perspective view of a tablet computer enclosure showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a left side elevation view thereof. 

The ornamental design for a tablet computer enclosure, as shown and described. 